Exam-style question
Try this first
A particle of mass 3 kg has resultant force 33 N. Find the acceleration. Show your working one step at a time.
Model answer
What a good answer should say
- The final answer is 11 m s^-2.
- Use Newton's second law F = ma with a positive direction chosen.
- Set F = 33.
- Set m = 3.
This answer is tied to the objective: P1 Understand and use fundamental quantities and units in the SI system, including length, time and mass; understand and use derived quantities and units including velocity, acceleration, force, weight and moment..
Explanation
Why this works
Use the explanation to connect the worked answer back to P1 Understand and use fundamental quantities and units in the SI system, including length, time and mass; understand and use derived quantities and units including velocity, acceleration, force, weight and moment..
exam warm-up keeps the canonical answer 11 m s^-2 fixed before the model answer is written, so the worked solution and final answer agree.
Maths method check
- Topic focus: Mechanics.
- Question style: exam_style.
- Reasoning demand: recall.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
No common mistake is linked to this question yet.